Diamond Rapids will be Intel’s last Xeon with SGX as TDX takes over

Intel will end new Xeon support for Software Guard Extensions (SGX) after Diamond Rapids, making Trust Domain Extensions (TDX) the focus of its confidential-computing roadmap. Existing SGX platforms are due to receive security updates and support into the early 2030s. Intel also plans to add trusted I/O, post-quantum cryptography, and enhanced attestation to TDX, though it has not set availability dates.
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https://4sysops.com/archives/diamond-rapids-will-be-intels-last-xeon-with-sgx-as-tdx-takes-over/